Great shots. The pier provides nice lines leading our eyes right back into the sunset. The foreground is effective. Wonderful colors. I realy like the way those rays rise up in #2 toward the blue sky. Were you using a filter?

In #1 notice how the structure at the end of the pier overlaps the building in the background. Not only will it add depth, but also will give more shape to the pier building if you have space between the two. You would have just had to move over to your left a few strides. So, take note of how foreground elements line up with elements in the rear.

In #2 notice how you can clearly see the right part of the building at the end of the pier, the part that sticks straight out, yet on the other side it blends right into the background and is not nearly as evident. With the clear background (sky) the building details are clearer. A view sightly to your left would have gotten both sides of the building in front of the clear space of the sky behind it. Of course, you goal here was probably to have the walkway nicely centered, so the building ends up as it is. Anyway, just keep looking at the relationship of foreground elements to the background.

Next, again in #1 look at the water. Small waves are visible. Another look would be to use a smaller aperture and therefore, a slower shutter speed, and those waves would flatten out into a silky effect. It would just give you another alternative as to how you want the water to look. It might look like the water under the pier to the left in photo #2., ie. almost smooth.

The second photo is stunning. It has all the right ingredients to be successful. The first photo is also vibrant but - on my display - I find the yellows a bit on the strong side. Other than that, it's a perfectly nice photo too.